\u672c\u5730\u7f13\u5b58<\/li>\n<\/ul>\n\u90fd\u5bb9\u6613\u6269\u5c55\u3002<\/p>\n
\n\u516d\u5341\u4e09\u3001\u767e\u4e07\u7ea7\u56fe\u7247\u67e5\u8be2\u7b56\u7565<\/h2>\n
\u771f\u5b9e\u7528\u6237：<\/p>\n
\u53ef\u80fd\u6709：<\/p>\n
\u51e0\u4e07\u5f20\u7167\u7247\u3002<\/p>\n
\u4f01\u4e1a\u5e94\u7528：<\/p>\n
\u751a\u81f3：<\/p>\n
\u7ba1\u7406\u767e\u4e07\u7ea7\u56fe\u7247\u8d44\u6e90\u3002<\/p>\n
\n\u6838\u5fc3\u539f\u5219：<\/p>\n
\u4e0d\u8981\u52a0\u8f7d\u5168\u90e8\u3002<\/p>\n
\n\u9519\u8bef：<\/p>\n
\u67e5\u8be2100000\u5f20<\/p>\n
\u2193<\/p>\n
\u4fdd\u5b58\u6570\u7ec4<\/p>\n
\u2193<\/p>\n
\u663e\u793a<\/p>\n
\n\u6b63\u786e：<\/p>\n
\u91c7\u7528：<\/p>\n
\u5206\u9875 + \u6e38\u6807\u3002<\/p>\n
\n\u4f8b\u5982：<\/p>\n
\u7b2c\u4e00\u6b21：<\/p>\n
offset = 0<\/p>\n
limit = 50<\/p>\n
\u8fd4\u56de：<\/p>\n
50\u5f20\u3002<\/p>\n
\n\u7b2c\u4e8c\u6b21：<\/p>\n
offset = 50<\/p>\n
limit = 50<\/p>\n
\u7ee7\u7eed\u52a0\u8f7d\u3002<\/p>\n
\n\u5f62\u6210：<\/p>\n
\u6d41\u5f0f\u52a0\u8f7d\u3002<\/p>\n
\n\u516d\u5341\u56db\u3001\u76f8\u518c\u6570\u636e\u5206\u9875\u72b6\u6001\u7ba1\u7406<\/h2>\n
ViewModel \u4e2d：<\/p>\n
\u901a\u5e38\u7ef4\u62a4：<\/p>\n
class GalleryState {<\/p>\n
assets: PhotoAsset[];<\/p>\n
page: number;<\/p>\n
loading: boolean;<\/p>\n
hasMore: boolean;<\/p>\n
}<\/p>\n
\n\u4f8b\u5982：<\/p>\n
\u521d\u59cb：<\/p>\n
page = 1<\/p>\n
assets = []<\/p>\n
loading = false<\/p>\n
\n\u7528\u6237\u6253\u5f00\u9875\u9762：<\/p>\n
loading=true<\/p>\n
\u2193<\/p>\n
\u67e5\u8be2\u7b2c\u4e00\u9875<\/p>\n
\u2193<\/p>\n
\u8ffd\u52a0\u6570\u636e<\/p>\n
\u2193<\/p>\n
loading=false<\/p>\n
\n\u7528\u6237\u6ed1\u5230\u5e95：<\/p>\n
\u7ee7\u7eed：<\/p>\n
page++<\/p>\n
\u2193<\/p>\n
\u52a0\u8f7d\u4e0b\u4e00\u9875<\/p>\n
\n\u516d\u5341\u4e94\u3001Thumbnail \u52a0\u8f7d\u7cfb\u7edf\u8bbe\u8ba1<\/h2>\n
\u76f8\u518c\u4f53\u9a8c\u597d\u4e0d\u597d，\u6838\u5fc3\u4e0d\u662f\u67e5\u8be2\u3002<\/p>\n
\u800c\u662f\u56fe\u7247\u663e\u793a\u901f\u5ea6\u3002<\/p>\n
\n\u7528\u6237\u6253\u5f00\u76f8\u518c：<\/p>\n
\u5e0c\u671b：<\/p>\n
\u9a6c\u4e0a\u770b\u5230\u56fe\u7247\u3002<\/p>\n
\n\u6240\u4ee5：<\/p>\n
\u9700\u8981：<\/p>\n
Thumbnail Manager\u3002<\/p>\n
\n\u67b6\u6784：<\/p>\n
PhotoAsset<\/p>\n
|<\/p>\n
\u2193<\/p>\n
ThumbnailManager<\/p>\n
|<\/p>\n
\u251c\u2500\u2500 Memory Cache<\/p>\n
|<\/p>\n
\u2514\u2500\u2500 Disk Cache<\/p>\n
|<\/p>\n
\u2193<\/p>\n
Image Component<\/p>\n
\n\u516d\u5341\u516d\u3001\u4e24\u7ea7\u56fe\u7247\u7f13\u5b58\u8bbe\u8ba1<\/h2>\n
\u5927\u578b\u56fe\u7247\u5e94\u7528：<\/p>\n
\u901a\u5e38\u4f7f\u7528：<\/p>\n
\u4e24\u7ea7\u7f13\u5b58\u3002<\/p>\n
\n\u4e00\u7ea7\u7f13\u5b58：\u5185\u5b58\u7f13\u5b58<\/h3>\n
\u901f\u5ea6\u6700\u5feb\u3002<\/p>\n
\u4fdd\u5b58：<\/p>\n
\u6700\u8fd1\u4f7f\u7528\u56fe\u7247\u3002<\/p>\n
\u4f8b\u5982：<\/p>\n
URI<\/p>\n
\u2193<\/p>\n
PixelMap\u7f29\u7565\u56fe<\/p>\n
\n\u4f18\u70b9：<\/p>\n
\u8bbf\u95ee\u901f\u5ea6：<\/p>\n
\u6beb\u79d2\u7ea7\u3002<\/p>\n
\n\u7f3a\u70b9：<\/p>\n
\u5360\u7528\u5185\u5b58\u3002<\/p>\n
\n\u4e8c\u7ea7\u7f13\u5b58：\u78c1\u76d8\u7f13\u5b58<\/h3>\n
\u4fdd\u5b58：<\/p>\n
\u5df2\u7ecf\u751f\u6210\u7684\u7f29\u7565\u56fe\u6587\u4ef6\u3002<\/p>\n
\n\u4f8b\u5982：<\/p>\n
cache\/<\/p>\n
photo1.thumb<\/p>\n
photo2.thumb<\/p>\n
\n\u4f18\u70b9：<\/p>\n
\u9000\u51fa\u5e94\u7528\u540e\u4ecd\u7136\u5b58\u5728\u3002<\/p>\n
\n\u7f3a\u70b9：<\/p>\n
\u8bfb\u53d6\u6162\u4e00\u4e9b\u3002<\/p>\n
\n\u6574\u4f53：<\/p>\n
\u8bf7\u6c42\u56fe\u7247<\/p>\n
\u2193<\/p>\n
Memory Cache<\/p>\n
\u2193<\/p>\n
Disk Cache<\/p>\n
\u2193<\/p>\n
PhotoAccessHelper<\/p>\n
\n\u516d\u5341\u4e03\u3001LRU\u7f13\u5b58\u7b97\u6cd5<\/h2>\n
\u5185\u5b58\u6709\u9650\u3002<\/p>\n
\u4e0d\u80fd\u65e0\u9650\u4fdd\u5b58\u56fe\u7247\u3002<\/p>\n
\u6240\u4ee5\u91c7\u7528：<\/p>\n
LRU：<\/p>\n
Least Recently Used\u3002<\/p>\n
\u610f\u601d：<\/p>\n
\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u3002<\/p>\n
\n\u4f8b\u5982：<\/p>\n
\u7f13\u5b58\u5bb9\u91cf：<\/p>\n
100\u5f20\u3002<\/p>\n
\u5f53\u524d：<\/p>\n
A B C D E<\/p>\n
\u7528\u6237\u8bbf\u95ee：<\/p>\n
A\u3002<\/p>\n
\u53d8\u6210：<\/p>\n
B C D E A<\/p>\n
\n\u5f53\u52a0\u5165：<\/p>\n
F\u3002<\/p>\n
\u5220\u9664：<\/p>\n
\u6700\u4e45\u672a\u8bbf\u95ee：<\/p>\n
B\u3002<\/p>\n
\n\u76f8\u518c\u5e94\u7528\u975e\u5e38\u9002\u5408 LRU\u3002<\/p>\n
\n\u516d\u5341\u516b\u3001\u56fe\u7247\u52a0\u8f7d\u7ebf\u7a0b\u6a21\u578b<\/h2>\n
\u56fe\u7247\u52a0\u8f7d\u4e0d\u80fd\u963b\u585e UI\u3002<\/p>\n
\n\u9519\u8bef：<\/p>\n
UI\u7ebf\u7a0b<\/p>\n
\u2193<\/p>\n
\u8bfb\u53d6\u56fe\u7247<\/p>\n
\u2193<\/p>\n
\u89e3\u7801<\/p>\n
\u2193<\/p>\n
\u663e\u793a<\/p>\n
\n\u7ed3\u679c：<\/p>\n
\u9875\u9762\u5361\u987f\u3002<\/p>\n
\n\u6b63\u786e：<\/p>\n
UI\u7ebf\u7a0b<\/p>\n
|<\/p>\n
\u2193<\/p>\n
\u4efb\u52a1\u7ebf\u7a0b<\/p>\n
|<\/p>\n
\u2193<\/p>\n
Image Decode<\/p>\n
|<\/p>\n
\u2193<\/p>\n
\u8fd4\u56de\u7ed3\u679c<\/p>\n
|<\/p>\n
\u2193<\/p>\n
UI\u66f4\u65b0<\/p>\n
\n
\n\u516d\u5341\u4e5d\u3001\u5e76\u53d1\u52a0\u8f7d\u63a7\u5236<\/h2>\n
\u5f88\u591a\u4eba\u8ba4\u4e3a：<\/p>\n
\u7ebf\u7a0b\u8d8a\u591a\u8d8a\u5feb\u3002<\/p>\n
\u5b9e\u9645\u4e0a：<\/p>\n
\u56fe\u7247\u89e3\u7801\u5c5e\u4e8e CPU \u5bc6\u96c6\u578b\u4efb\u52a1\u3002<\/p>\n
\n\u4f8b\u5982：<\/p>\n
\u540c\u65f6：<\/p>\n
\u542f\u52a8：<\/p>\n
50\u4e2a\u56fe\u7247\u89e3\u7801\u3002<\/p>\n
\u7ed3\u679c：<\/p>\n
CPU\u6ee1\u8f7d\u3002<\/p>\n
\n\u6b63\u786e：<\/p>\n
\u9650\u5236\u5e76\u53d1\u6570\u91cf\u3002<\/p>\n
\u4f8b\u5982：<\/p>\n
\u4efb\u52a1\u961f\u5217<\/p>\n
|<\/p>\n
|<\/p>\n
Worker1<\/p>\n
Worker2<\/p>\n
Worker3<\/p>\n
\n\u901a\u5e38：<\/p>\n
\u6839\u636e\u8bbe\u5907\u6027\u80fd\u52a8\u6001\u8c03\u6574\u3002<\/p>\n
\n\u4e03\u5341\u3001\u5927\u56fe\u7247\u5185\u5b58\u4f18\u5316<\/h2>\n
\u56fe\u7247\u5e94\u7528\u6700\u5927\u7684\u95ee\u9898：<\/p>\n
\u5c31\u662f\u5185\u5b58\u3002<\/p>\n
\n\u4f8b\u5982：<\/p>\n
\u4e00\u5f20：<\/p>\n
6000\u00d74000\u7167\u7247\u3002<\/p>\n
RGBA：<\/p>\n
\u8ba1\u7b97：<\/p>\n
6000 \u00d7 4000 \u00d7 4<\/p>\n
\u224896MB<\/p>\n
\n\u5982\u679c\u540c\u65f6：<\/p>\n
\u52a0\u8f7d5\u5f20：<\/p>\n
\u63a5\u8fd1：<\/p>\n
500MB\u3002<\/p>\n
\n\u6240\u4ee5：<\/p>\n
\u5fc5\u987b：<\/p>\n
\u63a7\u5236\u3002<\/p>\n
\n\u4e03\u5341\u4e00\u3001\u56fe\u7247\u89e3\u7801\u5c3a\u5bf8\u63a7\u5236<\/h2>\n
\u4e0d\u8981：<\/p>\n
\u9ed8\u8ba4\u52a0\u8f7d\u539f\u56fe\u3002<\/p>\n
\n\u4f8b\u5982：<\/p>\n
\u7528\u6237\u67e5\u770b\u9884\u89c8\u3002<\/p>\n
\u5c4f\u5e55：<\/p>\n
1080P\u3002<\/p>\n
\n\u539f\u56fe：<\/p>\n
6000\u00d74000\u3002<\/p>\n
\u6ca1\u5fc5\u8981\u3002<\/p>\n
\n\u5e94\u8be5：<\/p>\n
\u6839\u636e\u76ee\u6807\u663e\u793a\u5c3a\u5bf8：<\/p>\n
\u8ba1\u7b97\u91c7\u6837\u6bd4\u4f8b\u3002<\/p>\n
\n\u4f8b\u5982：<\/p>\n
\u76ee\u6807：<\/p>\n
1200\u00d7800\u3002<\/p>\n
\u90a3\u4e48：<\/p>\n
\u89e3\u7801：<\/p>\n
\u63a5\u8fd1\u8fd9\u4e2a\u5c3a\u5bf8\u5373\u53ef\u3002<\/p>\n
\n\u4f18\u52bf：<\/p>\n
\u660e\u663e\u964d\u4f4e：<\/p>\n
\u5185\u5b58\u3002<\/p>\n
\n\u4e03\u5341\u4e8c\u3001\u5feb\u901f\u6ed1\u52a8\u4f18\u5316<\/h2>\n
\u76f8\u518c\u5217\u8868：<\/p>\n
\u5feb\u901f\u6ed1\u52a8\u65f6：<\/p>\n
\u6700\u5bb9\u6613\u5361\u987f\u3002<\/p>\n
\n\u539f\u56e0：<\/p>\n
\u5927\u91cf\u56fe\u7247\u8bf7\u6c42\u3002<\/p>\n
\n\u4f18\u5316：<\/p>\n
\u7b2c\u4e00<\/h3>\n
\u53d6\u6d88\u4e0d\u53ef\u89c1\u4efb\u52a1\u3002<\/p>\n
\u4f8b\u5982：<\/p>\n
\u7528\u6237\u5feb\u901f\u6ed1\u8fc7：<\/p>\n
\u7b2c100\u5f20\u3002<\/p>\n
\u8fd8\u6ca1\u52a0\u8f7d\u5b8c\u6210\u3002<\/p>\n
\u4f46\u662f\u7528\u6237\u5df2\u7ecf\u5230：<\/p>\n
\u7b2c500\u5f20\u3002<\/p>\n
\u90a3\u4e48：<\/p>\n
\u7b2c100\u5f20\u4efb\u52a1\u5e94\u8be5\u53d6\u6d88\u3002<\/p>\n
\n\u7b2c\u4e8c<\/h3>\n
\u63d0\u9ad8\u5f53\u524d\u533a\u57df\u4f18\u5148\u7ea7\u3002<\/p>\n
\u4f8b\u5982：<\/p>\n
\u5f53\u524d\u5c4f\u5e55：<\/p>\n
\u4f18\u5148\u52a0\u8f7d\u3002<\/p>\n
\n\u7b2c\u4e09<\/h3>\n
\u964d\u4f4e\u540e\u53f0\u4efb\u52a1\u3002<\/p>\n
\n\u4e03\u5341\u4e09\u3001\u56fe\u7247\u9009\u62e9\u5668\u8bbe\u8ba1<\/h2>\n
\u7c7b\u4f3c：<\/p>\n
\u670b\u53cb\u5708：<\/p>\n
\u9009\u62e9\u56fe\u7247\u3002<\/p>\n
\u901a\u5e38：<\/p>\n
\u652f\u6301：<\/p>\n
\n- \u591a\u9009<\/li>\n
- \u6570\u91cf\u9650\u5236<\/li>\n
- \u5df2\u9009\u72b6\u6001<\/li>\n
- \u539f\u56fe\u9009\u62e9<\/li>\n<\/ul>\n
\n\u6570\u636e\u7ed3\u6784：<\/p>\n
interface SelectedPhoto {<\/p>\n
asset: PhotoAsset;<\/p>\n
selected:boolean;<\/p>\n
order:number;<\/p>\n
}<\/p>\n
\n\u4e3a\u4ec0\u4e48\u4fdd\u5b58：<\/p>\n
PhotoAsset？<\/p>\n
\u56e0\u4e3a：<\/p>\n
\u540e\u7eed\u9700\u8981：<\/p>\n
\u83b7\u53d6\u539f\u56fe\u3002<\/p>\n
\n\u4e0d\u8981\u4fdd\u5b58：<\/p>\n
PixelMap\u3002<\/p>\n
\n\u4e03\u5341\u56db\u3001\u591a\u9009\u56fe\u7247\u6027\u80fd\u95ee\u9898<\/h2>\n
\u7528\u6237\u9009\u62e9：<\/p>\n
50\u5f20\u56fe\u7247\u3002<\/p>\n
\u4e0d\u80fd：<\/p>\n
\u7acb\u5373\u5168\u90e8\u52a0\u8f7d\u539f\u56fe\u3002<\/p>\n
\n\u6b63\u786e：<\/p>\n
\u9009\u62e9\u9636\u6bb5：<\/p>\n
\u4fdd\u5b58：<\/p>\n
PhotoAsset\u3002<\/p>\n
\n\u4e0a\u4f20\u9636\u6bb5：<\/p>\n
\u9010\u4e2a\u5904\u7406：<\/p>\n
PhotoAsset1<\/p>\n
\u2193<\/p>\n
PixelMap<\/p>\n
\u2193<\/p>\n
\u538b\u7f29<\/p>\n
\u2193<\/p>\n
\u4e0a\u4f20<\/p>\n
PhotoAsset2<\/p>\n
\u2193<\/p>\n
PixelMap<\/p>\n
\u2193<\/p>\n
\u538b\u7f29<\/p>\n
\u2193<\/p>\n
\u4e0a\u4f20<\/p>\n
\n\u907f\u514d：<\/p>\n
\u77ac\u95f4\u5360\u7528\u5927\u91cf\u5185\u5b58\u3002<\/p>\n
\n\u4e03\u5341\u4e94\u3001\u7c7b\u4f3c\u5fae\u4fe1\u670b\u53cb\u5708\u56fe\u7247\u9009\u62e9\u5668\u67b6\u6784<\/h2>\n
\u4e00\u4e2a\u5b8c\u6574\u56fe\u7247\u9009\u62e9\u5668：<\/p>\n
\u5982\u4e0b：<\/p>\n
PhotoPickerPage<\/p>\n
|<\/p>\n
\u2193<\/p>\n
PhotoGrid<\/p>\n
|<\/p>\n
\u2193<\/p>\n
ThumbnailManager<\/p>\n
|<\/p>\n
\u2193<\/p>\n
SelectionManager<\/p>\n
|<\/p>\n
\u2193<\/p>\n
UploadPipeline<\/p>\n
\nSelectionManager：<\/p>\n
\u8d1f\u8d23：<\/p>\n
\n- \u5df2\u9009\u6570\u91cf<\/li>\n
- \u6392\u5e8f<\/li>\n
- \u5220\u9664\u9009\u62e9<\/li>\n<\/ul>\n
\nUploadPipeline：<\/p>\n
\u8d1f\u8d23：<\/p>\n
\n- \u52a0\u8f7d<\/li>\n
- \u538b\u7f29<\/li>\n
- \u4e0a\u4f20<\/li>\n<\/ul>\n
\n\u4e03\u5341\u516d\u3001\u76f8\u518c\u6a21\u5757\u9519\u8bef\u5904\u7406\u4f53\u7cfb<\/h2>\n
\u751f\u4ea7\u73af\u5883\u5fc5\u987b\u5904\u7406\u5f02\u5e38\u3002<\/p>\n
\n\u6743\u9650\u5f02\u5e38<\/h3>\n
\u7528\u6237\u62d2\u7edd\u3002<\/p>\n
\u5904\u7406：<\/p>\n
\u5f15\u5bfc\u6388\u6743\u3002<\/p>\n
\n\u56fe\u7247\u4e0d\u5b58\u5728<\/h3>\n
\u4f8b\u5982：<\/p>\n
\u7528\u6237\u5220\u9664\u3002<\/p>\n
\u5904\u7406：<\/p>\n
\u5237\u65b0\u5217\u8868\u3002<\/p>\n
\n\u56fe\u7247\u635f\u574f<\/h3>\n
ImageSource\u5931\u8d25\u3002<\/p>\n
\u5904\u7406：<\/p>\n
\u8df3\u8fc7\u3002<\/p>\n
\n\u5185\u5b58\u4e0d\u8db3<\/h3>\n
\u964d\u4f4e\u89e3\u7801\u5c3a\u5bf8\u3002<\/p>\n
\n\u4e03\u5341\u4e03\u3001\u76f8\u518c\u751f\u547d\u5468\u671f\u7ba1\u7406<\/h2>\n
\u9875\u9762\u9000\u51fa：<\/p>\n
\u5fc5\u987b\u91ca\u653e\u8d44\u6e90\u3002<\/p>\n
\n\u4f8b\u5982：<\/p>\n
PixelMap\u3002<\/p>\n
\u4e0d\u7528\u540e：<\/p>\n
\u91ca\u653e\u3002<\/p>\n
\n\u7f13\u5b58：<\/p>\n
\u6839\u636e\u7b56\u7565\u6e05\u7406\u3002<\/p>\n
\n\u540e\u53f0：<\/p>\n
\u6682\u505c\u975e\u5fc5\u8981\u4efb\u52a1\u3002<\/p>\n
\n\u6d41\u7a0b：<\/p>\n
\u9875\u9762\u8fdb\u5165<\/p>\n
\u2193<\/p>\n
\u521b\u5efa\u8d44\u6e90<\/p>\n
\u2193<\/p>\n
\u4f7f\u7528<\/p>\n
\u2193<\/p>\n
\u9875\u9762\u9000\u51fa<\/p>\n
\u2193<\/p>\n
\u91ca\u653e<\/p>\n
\n\u4e03\u5341\u516b\u3001\u4f01\u4e1a\u7ea7\u76f8\u518c\u6700\u7ec8\u67b6\u6784<\/h2>\n
\u5b8c\u6574：<\/p>\n
Gallery UI<\/p>\n
|<\/p>\n
\u2193<\/p>\n
ViewModel<\/p>\n
|<\/p>\n
\u2193<\/p>\n
Repository<\/p>\n
|<\/p>\n
\u2193<\/p>\n
PhotoAccessService<\/p>\n
|<\/p>\n
\u2193<\/p>\n
PhotoAccessHelper<\/p>\n
|<\/p>\n
\u2193<\/p>\n
Media Library<\/p>\n
\u56fe\u7247\u5904\u7406：<\/p>\n
PhotoAsset<\/p>\n
\u2193<\/p>\n
ImageSource<\/p>\n
\u2193<\/p>\n
PixelMap<\/p>\n
\u2193<\/p>\n
ImagePacker<\/p>\n
\u2193<\/p>\n
\u4fdd\u5b58\/\u4e0a\u4f20<\/p>\n
\u516b\u5341\u3001PhotoAccessHelper \u5e95\u5c42\u539f\u7406\u5206\u6790<\/h3>\n
\u524d\u9762\u6211\u4eec\u4e3b\u8981\u7ad9\u5728\u5e94\u7528\u5f00\u53d1\u89d2\u5ea6，\u4ecb\u7ecd\u4e86\u5982\u4f55\u4f7f\u7528 PhotoAccessHelper \u5b8c\u6210：<\/p>\n
\n- \u67e5\u8be2\u56fe\u7247<\/li>\n
- \u5c55\u793a\u76f8\u518c<\/li>\n
- \u52a0\u8f7d\u7f29\u7565\u56fe<\/li>\n
- \u83b7\u53d6\u539f\u56fe<\/li>\n
- \u4fdd\u5b58\u56fe\u7247<\/li>\n
- \u5220\u9664\u8d44\u6e90<\/li>\n<\/ul>\n
\u4f46\u662f\u5982\u679c\u60f3\u771f\u6b63\u638c\u63e1 HarmonyOS NEXT \u76f8\u518c\u4f53\u7cfb，\u8fd8\u9700\u8981\u7406\u89e3\u5b83\u5e95\u5c42\u7684\u5de5\u4f5c\u673a\u5236\u3002<\/p>\n
PhotoAccessHelper \u5e76\u4e0d\u662f\u7b80\u5355\u7684\u4e00\u4e2a\u6587\u4ef6\u8bfb\u53d6\u5de5\u5177\u3002<\/p>\n
\u5b83\u5b9e\u9645\u4e0a\u8fde\u63a5\u7684\u662f：<\/p>\n
\u5e94\u7528\u5c42 \u2192 \u5a92\u4f53\u8bbf\u95ee\u6846\u67b6 \u2192 \u7cfb\u7edf\u5a92\u4f53\u5e93 \u2192 \u6587\u4ef6\u5b58\u50a8\u7cfb\u7edf<\/p>\n
\u6574\u4e2a\u94fe\u8def\u3002<\/p>\n
\n\u516b\u5341\u4e00\u3001HarmonyOS \u5a92\u4f53\u8bbf\u95ee\u6574\u4f53\u67b6\u6784<\/h3>\n
\u5b8c\u6574\u7ed3\u6784\u5982\u4e0b：<\/p>\n
\u5e94\u7528\u5c42<\/p>\n
Gallery App
\n\u56fe\u7247\u7f16\u8f91\u5668
\n\u4e0a\u4f20\u7ec4\u4ef6<\/p>\n
\u2193<\/p>\n
PhotoAccessHelper<\/p>\n
\u2193<\/p>\n
Media Library Framework<\/p>\n
\u2193<\/p>\n
DataShare \u6570\u636e\u8bbf\u95ee\u5c42<\/p>\n
\u2193<\/p>\n
Media Database<\/p>\n
\u2193<\/p>\n
\u6587\u4ef6\u7cfb\u7edf<\/p>\n
\u2193<\/p>\n
\u771f\u5b9e\u56fe\u7247\u6587\u4ef6<\/p>\n
\n\u5176\u4e2d：<\/p>\n
\u5e94\u7528\u5e76\u4e0d\u4f1a\u76f4\u63a5\u64cd\u4f5c\u5e95\u5c42\u6587\u4ef6\u3002<\/p>\n
\u6240\u6709\u5a92\u4f53\u8d44\u6e90\u8bbf\u95ee，\u90fd\u7ecf\u8fc7\u7cfb\u7edf\u5a92\u4f53\u670d\u52a1\u3002<\/p>\n
\u8fd9\u6837\u53ef\u4ee5\u4fdd\u8bc1：<\/p>\n
\n- \u6743\u9650\u63a7\u5236<\/li>\n
- \u6570\u636e\u4e00\u81f4\u6027<\/li>\n
- \u5a92\u4f53\u7d22\u5f15\u540c\u6b65<\/li>\n
- \u5b89\u5168\u9694\u79bb<\/li>\n<\/ul>\n
\n\u516b\u5341\u4e8c\u3001Media Library \u7684\u4f5c\u7528<\/h2>\n
HarmonyOS \u7cfb\u7edf\u4e2d，\u7167\u7247\u548c\u89c6\u9891\u5e76\u4e0d\u662f\u7b80\u5355\u5b58\u5728\u4e00\u4e2a\u76ee\u5f55\u4e2d\u3002<\/p>\n
\u7cfb\u7edf\u7ef4\u62a4\u4e86\u4e00\u5957\u5a92\u4f53\u6570\u636e\u5e93\u3002<\/p>\n
\u4f8b\u5982：<\/p>\n
\u4e00\u5f20\u7167\u7247：<\/p>\n
\u6587\u4ef6：<\/p>\n
IMG_001.jpg<\/p>\n
\u540c\u65f6\u5bf9\u5e94\u6570\u636e\u5e93\u8bb0\u5f55：<\/p>\n
{
\n uri:"photo:\/\/media\/001",<\/p>\n
name:"IMG_001.jpg",<\/p>\n
type:"image\/jpeg",<\/p>\n
width:4000,<\/p>\n
height:3000,<\/p>\n
createTime:xxx
\n}<\/p>\n
\n\u6240\u4ee5：<\/p>\n
\u7167\u7247\u5b9e\u9645\u4e0a\u6709\u4e24\u4e2a\u90e8\u5206：<\/p>\n
\u7b2c\u4e00\u90e8\u5206：<\/p>\n
\u5a92\u4f53\u6570\u636e\u3002<\/p>\n
\u4e5f\u5c31\u662f：<\/p>\n
JPEG \u6587\u4ef6\u3002<\/p>\n
\u7b2c\u4e8c\u90e8\u5206：<\/p>\n
\u5a92\u4f53\u7d22\u5f15\u3002<\/p>\n
\u4e5f\u5c31\u662f：<\/p>\n
\u6570\u636e\u5e93\u8bb0\u5f55\u3002<\/p>\n
\n\u5173\u7cfb：<\/p>\n
Media Database<\/p>\n
|<\/p>\n
|<\/p>\n
PhotoAsset<\/p>\n
|<\/p>\n
|<\/p>\n
Image File<\/p>\n
\n\u516b\u5341\u4e09\u3001\u4e3a\u4ec0\u4e48 PhotoAsset \u4e0d\u662f\u666e\u901a\u5bf9\u8c61？<\/h2>\n
\u5f88\u591a\u5f00\u53d1\u8005\u7b2c\u4e00\u6b21\u4f7f\u7528：<\/p>\n
PhotoAsset\u3002<\/p>\n
\u4f1a\u8ba4\u4e3a：<\/p>\n
\u5b83\u5c31\u662f：<\/p>\n
\u56fe\u7247\u5bf9\u8c61\u3002<\/p>\n
\u5b9e\u9645\u4e0a\u4e0d\u662f\u3002<\/p>\n
\nPhotoAsset \u66f4\u50cf：<\/p>\n
\u6570\u636e\u5e93 Entity\u3002<\/p>\n
\u7c7b\u4f3c：<\/p>\n
Java \u4e2d：<\/p>\n
class UserEntity {<\/p>\n
id;<\/p>\n
name;<\/p>\n
}<\/p>\n
\nPhotoAsset：<\/p>\n
\u4ee3\u8868：<\/p>\n
\u5a92\u4f53\u5e93\u4e2d\u7684\u4e00\u6761\u8bb0\u5f55\u3002<\/p>\n
\n\u4f8b\u5982：<\/p>\n
PhotoAsset<\/p>\n
id:<\/p>\n
123456<\/p>\n
uri:<\/p>\n
photo:\/\/media\/123456<\/p>\n
name:<\/p>\n
test.jpg<\/p>\n
\n\u5b83\u672c\u8eab\u4e0d\u5305\u542b：<\/p>\n
\u5b8c\u6574\u56fe\u7247\u4e8c\u8fdb\u5236\u3002<\/p>\n
\n\u6240\u4ee5：<\/p>\n
\u4ee5\u4e0b\u64cd\u4f5c\u662f\u4e0d\u5408\u7406\u7684：<\/p>\n
\u4fdd\u5b58\u5927\u91cfPhotoAsset\u5bf9\u8c61<\/p>\n
\u2193<\/p>\n
\u6c38\u4e45\u7f13\u5b58<\/p>\n
\n\u56e0\u4e3a：<\/p>\n
\u5b83\u53ea\u662f\u5a92\u4f53\u8d44\u6e90\u5f15\u7528\u3002<\/p>\n
\n\u516b\u5341\u56db\u3001PhotoAsset \u751f\u547d\u5468\u671f<\/h2>\n
PhotoAsset \u751f\u547d\u5468\u671f：<\/p>\n
\u901a\u5e38\u5206\u4e3a\u51e0\u4e2a\u9636\u6bb5\u3002<\/p>\n
\n\u7b2c\u4e00\u9636\u6bb5：\u67e5\u8be2\u4ea7\u751f<\/h3>\n
\u5e94\u7528\u67e5\u8be2：<\/p>\n
PhotoAccessHelper<\/p>\n
\u2193<\/p>\n
PhotoAsset<\/p>\n
\n\u6b64\u65f6：<\/p>\n
\u5bf9\u8c61\u53ea\u662f：<\/p>\n
\u8d44\u6e90\u63cf\u8ff0\u3002<\/p>\n
\n\u7b2c\u4e8c\u9636\u6bb5：\u4f7f\u7528<\/h3>\n
\u4f8b\u5982：<\/p>\n
\u83b7\u53d6：<\/p>\n
\n- \u540d\u79f0<\/li>\n
- URI<\/li>\n
- \u65f6\u95f4<\/li>\n<\/ul>\n
\n\u7b2c\u4e09\u9636\u6bb5：\u8bbf\u95ee\u6570\u636e<\/h3>\n
\u4f8b\u5982：<\/p>\n
\u6253\u5f00\u56fe\u7247\u3002<\/p>\n
\u8fdb\u5165：<\/p>\n
PhotoAsset<\/p>\n
\u2193<\/p>\n
ImageSource<\/p>\n
\u2193<\/p>\n
PixelMap<\/p>\n
\n\u7b2c\u56db\u9636\u6bb5：\u91ca\u653e<\/h3>\n
\u9875\u9762\u5173\u95ed\u3002<\/p>\n
\u91ca\u653e：<\/p>\n
\u76f8\u5173\u8d44\u6e90\u3002<\/p>\n
\n\u516b\u5341\u4e94\u3001URI \u673a\u5236\u6df1\u5165\u7406\u89e3<\/h2>\n
HarmonyOS \u4f7f\u7528 URI \u6807\u8bc6\u5a92\u4f53\u8d44\u6e90\u3002<\/p>\n
\u4f8b\u5982：<\/p>\n
photo:\/\/media\/xxxxxxxx<\/p>\n
\nURI \u7684\u610f\u4e49：<\/p>\n
\u4e0d\u662f\u544a\u8bc9\u4f60：<\/p>\n
\u6587\u4ef6\u5728\u54ea\u91cc\u3002<\/p>\n
\u800c\u662f\u544a\u8bc9\u7cfb\u7edf：<\/p>\n
\u6211\u8981\u8bbf\u95ee\u54ea\u4e2a\u8d44\u6e90\u3002<\/p>\n
\n\u7c7b\u4f3c：<\/p>\n
\u4e92\u8054\u7f51：<\/p>\n
https:\/\/example.com\/user\/10086<\/p>\n
\u4e0d\u662f\u544a\u8bc9\u6d4f\u89c8\u5668：<\/p>\n
\u670d\u52a1\u5668\u6587\u4ef6\u8def\u5f84\u3002<\/p>\n
\u800c\u662f：<\/p>\n
\u8d44\u6e90\u5b9a\u4f4d\u3002<\/p>\n
\n\u5a92\u4f53 URI：<\/p>\n
\u4e5f\u662f\u540c\u6837\u601d\u60f3\u3002<\/p>\n
\n\u516b\u5341\u516d\u3001URI \u76f8\u6bd4\u6587\u4ef6\u8def\u5f84\u7684\u4f18\u52bf<\/h2>\n1. \u6587\u4ef6\u4f4d\u7f6e\u53ef\u4ee5\u53d8\u5316<\/h3>\n
\u4f8b\u5982：<\/p>\n
\u7cfb\u7edf\u5347\u7ea7\u3002<\/p>\n
\u5b58\u50a8\u7b56\u7565\u6539\u53d8\u3002<\/p>\n
\n\u4f46\u662f：<\/p>\n
URI \u53ef\u4ee5\u4fdd\u6301\u7a33\u5b9a\u3002<\/p>\n
\n2. \u6743\u9650\u63a7\u5236<\/h3>\n
\u7cfb\u7edf\u53ef\u4ee5\u5224\u65ad：<\/p>\n
\u5f53\u524d\u5e94\u7528\u662f\u5426\u6709\u6743\u8bbf\u95ee\u3002<\/p>\n
\n3. \u8d44\u6e90\u7edf\u4e00\u7ba1\u7406<\/h3>\n
\u56fe\u7247：<\/p>\n
\u89c6\u9891：<\/p>\n
\u97f3\u9891：<\/p>\n
\u7edf\u4e00\u4f7f\u7528\u8d44\u6e90\u6a21\u578b\u3002<\/p>\n
\n\u516b\u5341\u4e03\u3001PhotoAccessHelper \u67e5\u8be2\u5230\u5e95\u53d1\u751f\u4e86\u4ec0\u4e48？<\/h2>\n
\u8c03\u7528：<\/p>\n
helper.getAssets()<\/p>\n
\u8868\u9762：<\/p>\n
\u53ea\u662f\u4e00\u4e2a\u65b9\u6cd5\u3002<\/p>\n
\u5185\u90e8：<\/p>\n
\u5927\u6982\u6d41\u7a0b：<\/p>\n
\u5e94\u7528<\/p>\n
\u2193<\/p>\n
IPC\u8c03\u7528<\/p>\n
\u2193<\/p>\n
\u5a92\u4f53\u670d\u52a1<\/p>\n
\u2193<\/p>\n
\u6570\u636e\u5e93\u67e5\u8be2<\/p>\n
\u2193<\/p>\n
\u751f\u6210Asset\u5bf9\u8c61<\/p>\n
\u2193<\/p>\n
\u8fd4\u56de\u5e94\u7528<\/p>\n
\n\u4e5f\u5c31\u662f\u8bf4：<\/p>\n
\u5b83\u4e0d\u662f\u76f4\u63a5\u8bbf\u95ee\u6570\u636e\u5e93\u3002<\/p>\n
\u800c\u662f：<\/p>\n
\u8de8\u8fdb\u7a0b\u8bbf\u95ee\u7cfb\u7edf\u670d\u52a1\u3002<\/p>\n
\n\u56e0\u6b64：<\/p>\n
\u9700\u8981\u8003\u8651：<\/p>\n
\u5f02\u6b65\u3002<\/p>\n
\n\u516b\u5341\u516b\u3001\u4e3a\u4ec0\u4e48\u76f8\u518c\u67e5\u8be2\u5fc5\u987b\u5f02\u6b65？<\/h2>\n
\u56e0\u4e3a：<\/p>\n
\u67e5\u8be2\u8fc7\u7a0b\u53ef\u80fd\u6d89\u53ca：<\/p>\n
\n- IPC\u901a\u4fe1<\/li>\n
- \u6570\u636e\u5e93\u8bbf\u95ee<\/li>\n
- \u6743\u9650\u68c0\u67e5<\/li>\n
- \u5bf9\u8c61\u521b\u5efa<\/li>\n<\/ul>\n
\n\u5982\u679c\u540c\u6b65\u6267\u884c：<\/p>\n
\u53ef\u80fd\u963b\u585e UI\u3002<\/p>\n
\n\u6240\u4ee5：<\/p>\n
\u73b0\u4ee3\u7cfb\u7edf API：<\/p>\n
\u57fa\u672c\u90fd\u662f：<\/p>\n
Promise \/ Async\u3002<\/p>\n
\n\u4f8b\u5982：<\/p>\n
const assets =
\n await helper.getAssets(options);<\/p>\n
\n\u516b\u5341\u4e5d\u3001PhotoAsset \u4e0e\u6743\u9650\u5173\u7cfb<\/h2>\n
\u4e00\u4e2a\u91cd\u8981\u95ee\u9898：<\/p>\n
\u4e3a\u4ec0\u4e48\u67e5\u8be2\u540e\u62ff\u5230 PhotoAsset？<\/p>\n
\u4f46\u662f\u6253\u5f00\u5931\u8d25？<\/p>\n
\n\u539f\u56e0：<\/p>\n
\u6743\u9650\u53ef\u80fd\u53d8\u5316\u3002<\/p>\n
\u4f8b\u5982：<\/p>\n
\u6d41\u7a0b：<\/p>\n
- \u7528\u6237\u6388\u6743<\/li>\n
- \u67e5\u8be2\u56fe\u7247<\/li>\n
- \u7528\u6237\u5173\u95ed\u6743\u9650<\/li>\n
- \u518d\u8bbf\u95ee\u56fe\u7247<\/li>\n
\n\u7ed3\u679c：<\/p>\n
\u8bbf\u95ee\u5931\u8d25\u3002<\/p>\n
\n\u6240\u4ee5：<\/p>\n
\u6743\u9650\u4e0d\u662f\u4e00\u6b21\u6027\u7684\u3002<\/p>\n
\u4f01\u4e1a\u5e94\u7528\u9700\u8981：<\/p>\n
\u6bcf\u6b21\u5173\u952e\u64cd\u4f5c\u68c0\u67e5\u3002<\/p>\n
\n\u4e5d\u5341\u3001\u5a92\u4f53\u5e93\u53d8\u5316\u76d1\u542c<\/h2>\n
\u771f\u5b9e\u76f8\u518c\u5e94\u7528：<\/p>\n
\u4e0d\u80fd\u53ea\u67e5\u8be2\u4e00\u6b21\u3002<\/p>\n
\u56e0\u4e3a：<\/p>\n
\u7cfb\u7edf\u7167\u7247\u968f\u65f6\u53d8\u5316\u3002<\/p>\n
\u4f8b\u5982：<\/p>\n
\u7528\u6237：<\/p>\n
\n- \u62cd\u7167<\/li>\n
- \u5220\u9664<\/li>\n
- \u4e0b\u8f7d\u56fe\u7247<\/li>\n
- \u63a5\u6536\u804a\u5929\u56fe\u7247<\/li>\n<\/ul>\n
\u5a92\u4f53\u5e93\u90fd\u4f1a\u53d8\u5316\u3002<\/p>\n
\n\u56e0\u6b64：<\/p>\n
\u76f8\u518c\u5e94\u7528\u9700\u8981：<\/p>\n
\u540c\u6b65\u673a\u5236\u3002<\/p>\n
\n\u5178\u578b：<\/p>\n
\u6253\u5f00\u9875\u9762<\/p>\n
\u2193<\/p>\n
\u67e5\u8be2\u5f53\u524d\u6570\u636e<\/p>\n
\u2193<\/p>\n
\u76d1\u542c\u53d8\u5316<\/p>\n
\u2193<\/p>\n
\u66f4\u65b0\u5217\u8868<\/p>\n
\n\u4e5d\u5341\u4e00\u3001\u4e3a\u4ec0\u4e48\u9700\u8981\u5a92\u4f53\u53d8\u5316\u901a\u77e5？<\/h2>\n
\u5047\u8bbe：<\/p>\n
\u76f8\u518c\u9875\u9762\u6253\u5f00\u3002<\/p>\n
\u5f53\u524d：<\/p>\n
100\u5f20\u7167\u7247\u3002<\/p>\n
\u7528\u6237\u9000\u51fa\u3002<\/p>\n
\u4f7f\u7528\u7cfb\u7edf\u76f8\u673a\u62cd\u4e86\u4e00\u5f20\u3002<\/p>\n
\u8fd4\u56de\u5e94\u7528\u3002<\/p>\n
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- \u65f6\u95f4<\/li>\n
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PhotoAccessHelper<\/p>\n
\u2193<\/p>\n
PhotoAsset<\/p>\n
\u2193<\/p>\n
Search Engine<\/p>\n
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HarmonyOS NEXT \u65f6\u4ee3：<\/p>\n
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\u8bfb\u53d6\u56fe\u7247<\/p>\n
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AI\u6a21\u578b\u5206\u6790<\/p>\n
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\u540e\u53f0\u6267\u884c\u3002<\/p>\n
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